A sophisticated criminal network producing unregistered firearms with 3D printers faced a massive federal and state crackdown across 12 U.S. states in early 2025. Authorities apprehended Lucas Alexandre Flaneto de Queiroz, known as “Zé Carioca,” identified as the central engineer leveraging cryptocurrency to finance the development and distribution of these untraceable “ghost guns.” The operation, spearheaded by the Rio de Janeiro Civil Police, State Public Ministry, and the Ministry of Justice and Public Security, highlights a growing threat posed by digitally fabricated weaponry.
Investigators from the Public Ministry and Civil Police confirm Queiroz is a key figure responsible for creating digital weapon models and offering consultation to individuals interested in manufacturing these illicit arms. His activities represent a significant challenge to law enforcement, as the prevalence of such unregistered firearms complicates traditional tracking methods.
The extensive sting, conducted collaboratively with federal agencies, targeted a vast illicit enterprise. The coordination across multiple jurisdictions underscores the widespread nature of the threat, illustrating how easily these digital blueprints can cross state lines and proliferate.
Unraveling the crypto-funded network
Lucas Alexandre Flaneto de Queiroz utilized digital currencies to finance his clandestine operations, enabling him to operate outside conventional financial systems. This method provided a layer of anonymity, making it significantly harder for authorities to trace the flow of funds and identify his collaborators.
Reports indicate that Queiroz even received cryptocurrency to attend international events, where he allegedly showcased his weapon designs while concealing his identity with a mask. This suggests a sophisticated effort to expand his network and disseminate his dangerous innovations on a global scale.
The menace of ghost weaponry
The criminal group specializes in manufacturing “ghost guns,” firearms that lack serial numbers and official registration, rendering them virtually untraceable. This absence of identifying marks presents a severe impediment to law enforcement efforts to track these weapons back to their origins or to individuals involved in their production and distribution.
Many of these weapons are constructed using high-resistance plastic components produced by 3D printers, combined with specific metallic parts to ensure functionality. This hybrid manufacturing approach allows for rapid, low-cost production while maintaining a significant level of lethality. The ease of acquiring materials and blueprints makes this method particularly appealing to criminal organizations.
International tip-off sparks investigation
The extensive investigation began following intelligence shared with the Brazilian government by a United States agency in late 2024. This international collaboration proved crucial in identifying the scope and nature of the illicit arms network, leading to the multi-state operation in early 2025.
The global reach of such criminal enterprises necessitates robust international cooperation to disrupt their activities effectively. Intelligence sharing between countries is becoming an indispensable tool in combating the proliferation of unregistered and digitally manufactured weapons.
Digital blueprint for illegal arms
The primary model promoted by Queiroz’s organization was a semi-automatic carbine, capable of being almost entirely manufactured using a 3D printer. This weapon carried an estimated production cost of only around $160, making it an alarmingly accessible option for criminals.
The digital projects for these firearms were widely disseminated across the internet. These packages included:
* Detailed manufacturing manuals
* Step-by-step video tutorials
* Ongoing technical support and consultation
This comprehensive approach enabled individuals with minimal technical expertise to assemble functional and dangerous weapons, bypassing all legal registration and background checks. The low cost and accessibility significantly lower the barrier to entry for illegal arms manufacturing.
Exploiting dark web and social platforms
Authorities confirm that the illicit material, including weapon designs and manufacturing guides, was widely distributed across various online platforms. This included mainstream social media, specialized forums, and particularly the dark web, a hidden part of the internet often used for illegal activities.
Investigators identified numerous transactions on various e-commerce platforms, indicating a broad network of buyers across multiple states. The ease with which these transactions were conducted online further complicated tracking efforts, despite the eventual breakthrough by authorities.
The anonymity provided by certain online environments, combined with the use of cryptocurrencies, created a fertile ground for the organization to thrive. This highlights the ongoing challenge for law enforcement to monitor and regulate digital spaces effectively.
Broader criminal connections
The ongoing investigation has revealed that some individuals involved in the ghost gun operation have connections to other serious criminal activities. These links include drug trafficking, paramilitary groups, and homicide cases, underscoring the severe threat this network posed to public safety. These broader criminal ties suggest a sophisticated, interconnected underworld leveraging advanced technology for illicit gains.
